Worksheet: Natural Hazards: Volcanic Eruptions
In this worksheet, we will practice recognizing and describing the natural processes that result in volcanic eruptions.
Where do most volcanic eruptions occur?
- ANear the equator
- BIn cold countries
- CIn hot countries
- DWhere tectonic plates meet
What is a volcano?
- AAn opening in Earth’s atmosphere
- BAn opening in Earth’s crust
- CA strong wind
- DA type of mountain
Scientists observe volcanic activity using monitors to measure the movement of the rocks that make up a volcano.
They can also predict when a volcano might erupt by measuring the gases that it releases. What name is given to scientists who study volcanoes?
- AA volcanologist
- BA paleontologist
- CA botanist
The diagram shows the parts of a volcano.
What is the molten rock that rushes up to the surface during a volcanic eruption called?
The photograph shows the Black Waterfall in Iceland, which was formed out of lava.
When lava cools, it becomes rock. The rock in this photograph is called basalt.
What type of rock is basalt?
When volcanoes erupt, the magma is forced out through a vent or opening. Once magma reaches the surface, it is called .
- Abasalt rock
- Ban ash cloud
The photograph shows Mount Bromo in Indonesia, which is an active volcano.
What is an active volcano?
- AA volcano that will not erupt again
- BA volcano that has not erupted for some time
- CA volcano that is erupting or has erupted recently